Scheduled Maintenance; Alternator Service; Engine Service - Kohler APM402 Operation

Under normal operating conditions, the generator set's alternator requires no routine service.
Consult the section titled: Prestart Checklist, for a list of routine checks.
WARNING
Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1) Move the generator set master switch to the OFF
position. (2) Disconnect the power to the battery charger. (3) Remove the battery cables, negative (–) lead first. Reconnect the
negative (–) lead last when reconnecting the battery. Follow these precautions to prevent starting of the generator set by an
automatic transfer switch, remote start/stop switch, or engine start command from a remote computer.
WARNING
Servicing the exhaust system. Hot parts can cause severe injury or death. Do not touch hot engine parts. The engine and
exhaust system components become extremely hot during operation.
DANGER
Servicing the generator set when it is operating. Exposed moving parts will cause severe injury or death. Keep hands,
feet, hair, clothing, and test leads away from the belts and pulleys when the generator set is running. Replace guards, screens,
and covers before operating the generator set.

3.1 Alternator Service

When operating the generator set under dusty or dirty conditions, use dry compressed air to blow dust out of the alternator while
the generator set is running. Direct the stream of air through openings in the generator set end bracket.

3.2 Engine Service

Perform engine service at the intervals specified in the engine manufacturer's service literature. Contact an authorized service
distributor/dealer to obtain service literature.
Note:
Have maintenance work, including battery service, performed by appropriately skilled and suitably trained maintenance
personnel familiar with generator set operation and service.
Kohler recommends the use of Kohler Genuine oil and filters for maintenance and service.
TP-6694 9/20
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before working on the generator set. Remove the
negative (–) lead first when disconnecting the battery. Reconnect the negative (–)
lead last when reconnecting the battery.
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until it cools.
Hazardous voltage. Moving parts.
Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are in place.
Section 3. Scheduled Maintenance
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